In spite of her embarrassment before Rodya’s urgent and challenging look, she could not deny herself that satisfaction.
Giải chi tiết:
Đáp án là D. challenging = curious look: cái nhìn tò mò, hiếu kì
Nghĩa các từ còn lại: demanding: đòi hỏi khắt khe; hard = difficult: khó
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.